Internal-combustion engine



May 7, 192-9. ox 1,711,493"

INTERNAL COMBUSTION ENGI NE .FiledFeb. 1. 1922 2 Sheets-Sheet l May 7, 1929. A. H. 50x

INTERNAL COMBUSTION ENGINE Filed Feb. 1. 1922 2 Sheets-Sheet 2 24 II I I I II I Patented May 7, 1929,

UNITED .STATES PATEN ANSLEY FOX, 01* PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- ries.

MEETS, T FOX HOLDING COMPANY, OF PI-IILADELPHTA, T ENNSYLVANIA, A GUR- PORATION OF DELAWARE.

' INTERNAn-ooraBUsrIon ENGINE.

, Application filed February 1,1922. Serial No. 533,420.

This invention relates particularly to air cooled internal combustion engines, and it is designed to provide improved means under control of the operator for regulating the amount of the cooling air and the temperature or. the engine.

A desideratum obtained by the improvements is the ability to operate the engine at' its highest efliciency throughout-the varying atmospheric temperatures to which it is subjected between the extremes of heat and cold; and to shut off the cold air in starting a cold engine, with a gradual delivery of air thereto as required after reaching the proper running temperature so that such running temperature may be obtained more quickly.

In the preferred form of the improvements, the engine is provided with an air inlet having a screen extending over a comparatively wide space, the inlet contracting downwardly and delivering to a fan chamber at the end of the crank case, from which a fan drives the air through a throat to a casing inclosing the cylinder heads, in combination with valve mechanism operated by means beyondthe engine for providing the desired size of opening between the inlet and the fan chamber, the opening extending across the axis of the fan and being placed in approximately symmetrical relation thereto.

In the drawings, Fig. 1 is a front elevation of an automobile engine housing containing. features of my improvements; Fig. 2 is a part sectional side elevation of the constructionshown inFig. 1; Fig. 3 is a front elevation of the detached tan scroll together with the shutter mechanism for controlling the admission of air thereto; Fig. 4- is a broken side elevation on an enlarged scale of the detached mechanism for operating the shutters, and'Fig. 5 is a sectional view taken on the line acv of Fig. 3.

The invention, as illustrated in the drawings, is applied to an automobile engine, of the internal combustion type, having the crank case 1, with a fan case 2 fixed at the forward end thereof, and the cylinders 3, having the casing or air chamber 4 fixed thereto so as to inclose the heads thereof; the tan case or scroll 2 being connected with the casing at by the throat 5.

A housing 6 incloses the engine with its connected parts and has in its front an eX-I r tended screen 7 at the mouth of an air passage 8 converging inwardly and downwardly to an 1nner circular orifice 9; concentric with and substantially the same size as the mouth or inlet formed by the ring 10, to the fan case 2. A fan 11 is revolved in the case 2 by the shaft 12on which it is fixed, the shaft being disposed substantially concentric to the ring 10. The air is drawn by the an through the screen 7, downwardly through the passage 8, the opening 9 and the ring 10 into the fan case2, whence it is forced upwardly through the neck 5 and the casing 4 to cool the engine.

Shutters 13 and 14, being sheet metal plates of approximately crescent shape as shown, are hinged or pivotally mounted on the respective studs 15 and 16 fixed in the respective parts 17 and 18 of the fan case, the shutter 13 containing the slot 19 concentric with the stud 15 to permit the passage of the stud 16 and the oscillation of the shutters 13 and 14; in closely fitting relation to each other and to the part 18 in which is formed the circular opening or ring 10 of the fan case. i

A link 20 is connected by studs 21 and 22 to the respective shutters 13 and 14, the stud 21 lying between the body of the shutter 13 and the stud 15 and the stud '16 lying becruined on the bearing 26 and having its'long arm connected with the rod 27 by the stud 28. The rod 27 is provided with a button or handle 29 by which it is reciprocated'in the 3 bearing 30. forming a part of the dash or instrument board 31 of the automobile.

The rod is provided with a rack. 32 adapted for engaging a catch 33 in the bearing 30. The board carries a spring 34: which bears upon the rod to hold the rack in engagement with the catch and maintain the rod in the desired position, the rod acting through the intermediate parts described to hold the shutters 13 and 14: in theiradjusted position.

. It will be understood that by pulling the rod it acts through the intermediate parts to open the valve mechanism comprising the closed in an automobile engine housing, the

combination with an air inlet in the front of saidhousing, a fan case, an air passage connecting said inlet With said fan case, and means for carrying air from said fan case into contact with said engine, of valve mechanism comprising a plurality of pivoted shutters and means for operating said shutters simultaneously in reverse directions for controlling the flow of air through said fan case. r

2. In an internal combustion engine enclosed in an automobile engine housing hav- 1ng an air screen in the front thereof, the

combination With an air passage having a sect1on for carrying air in contact W1th the cylinder heads, a fan casing connected therewith and a section contracting from said screen to said fan casing, of a ,fan in said casing and valve mechanism for controlling the flow of air from said last named section to said fan easing, said valve mechanism comprising a pair of pivoted shutters and mechanism adapted to be operated from the rear of said engine for operating said shutters simultaneously in opposite directions.

3. In an internal combustion engine having air cooling means comprising a casing for the cylinder head or heads, a fan case connected therewith and a fan in said case, said case having an inlet substantially concentric With said fan, and valve mechanism for controlling said inlet, said mechanism comprising shutters pivoted to said case, a link connecting said shutters so as to effect their movement in opposite directions simultaneously, and means for moving said shutters.

Signed at Philadelphia, in the county of Philadelphia, and State of Pennsylvania, this 28th day of January, 1922.

v ANSLEY H. FOX. 

